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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2024-06-23 22:01:50 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2024-06-28 09:35:13 +0200 |
| commit | 62d73261a0cfa309fd07d0da41a74b3f47f25b6f (patch) | |
| tree | 656ff9d597e85205e65f679e698d84d6f3396350 | |
| parent | Merge patch series "can: rcar_canfd: Small improvements and cleanups" (diff) | |
| download | linux-62d73261a0cfa309fd07d0da41a74b3f47f25b6f.tar.xz linux-62d73261a0cfa309fd07d0da41a74b3f47f25b6f.zip | |
can: m_can: Constify struct m_can_ops
'struct m_can_ops' is not modified in these drivers.
Constifying this structure moves some data to a read-only section, so
increase overall security.
On a x86_64, with allmodconfig, as an example:
Before:
======
text data bss dec hex filename
4806 520 0 5326 14ce drivers/net/can/m_can/m_can_pci.o
After:
=====
text data bss dec hex filename
4862 464 0 5326 14ce drivers/net/can/m_can/m_can_pci.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/all/a17b96d1be5341c11f263e1e45c9de1cb754e416.1719172843.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -rw-r--r-- | drivers/net/can/m_can/m_can.h | 2 | ||||
| -rw-r--r-- | drivers/net/can/m_can/m_can_pci.c | 2 | ||||
| -rw-r--r-- | drivers/net/can/m_can/m_can_platform.c | 2 | ||||
| -rw-r--r-- | drivers/net/can/m_can/tcan4x5x-core.c | 2 |
4 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/can/m_can/m_can.h b/drivers/net/can/m_can/m_can.h index 3a9edc292593..92b2bd8628e6 100644 --- a/drivers/net/can/m_can/m_can.h +++ b/drivers/net/can/m_can/m_can.h @@ -91,7 +91,7 @@ struct m_can_classdev { ktime_t irq_timer_wait; - struct m_can_ops *ops; + const struct m_can_ops *ops; int version; u32 irqstatus; diff --git a/drivers/net/can/m_can/m_can_pci.c b/drivers/net/can/m_can/m_can_pci.c index 45400de4163d..d72fe771dfc7 100644 --- a/drivers/net/can/m_can/m_can_pci.c +++ b/drivers/net/can/m_can/m_can_pci.c @@ -77,7 +77,7 @@ static int iomap_write_fifo(struct m_can_classdev *cdev, int offset, return 0; } -static struct m_can_ops m_can_pci_ops = { +static const struct m_can_ops m_can_pci_ops = { .read_reg = iomap_read_reg, .write_reg = iomap_write_reg, .write_fifo = iomap_write_fifo, diff --git a/drivers/net/can/m_can/m_can_platform.c b/drivers/net/can/m_can/m_can_platform.c index df0367124b4c..983ab80260dd 100644 --- a/drivers/net/can/m_can/m_can_platform.c +++ b/drivers/net/can/m_can/m_can_platform.c @@ -68,7 +68,7 @@ static int iomap_write_fifo(struct m_can_classdev *cdev, int offset, return 0; } -static struct m_can_ops m_can_plat_ops = { +static const struct m_can_ops m_can_plat_ops = { .read_reg = iomap_read_reg, .write_reg = iomap_write_reg, .write_fifo = iomap_write_fifo, diff --git a/drivers/net/can/m_can/tcan4x5x-core.c b/drivers/net/can/m_can/tcan4x5x-core.c index d723206ac7c9..2f73bf3abad8 100644 --- a/drivers/net/can/m_can/tcan4x5x-core.c +++ b/drivers/net/can/m_can/tcan4x5x-core.c @@ -357,7 +357,7 @@ static int tcan4x5x_get_gpios(struct m_can_classdev *cdev, return 0; } -static struct m_can_ops tcan4x5x_ops = { +static const struct m_can_ops tcan4x5x_ops = { .init = tcan4x5x_init, .read_reg = tcan4x5x_read_reg, .write_reg = tcan4x5x_write_reg, |